Editing System Functions - FilterMeisterWiki

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= System Functions =

== Registry Functions[[Anchor System-Registry-Functions]] ==
((setRegRoot)) - Sets the the current registry root key to either HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
((getRegRoot)) - Gets the current registry root
((setRegPath)) - Sets the the current registry path
((getRegPath)) - Gets the the current registry path
((putRegInt)) - Stores an integer value into the registry
((getRegInt)) - Gets an integer value from the registry
((putRegString)) - Stores a string value into the registry
((getRegString)) - Fetches a C-style character string from the Windows Registry
((putRegData)) - Stores a set of binary data into the registry
((getRegData)) - Gets a set of binary data from the registry
((enumRegSubKey)) - Gets name of n-th subkey under current registry key
((enumRegValue)) - Enumerates the names of all values stored under the current key
((deleteRegSubKey)) - Deletes specified subkey (and all its values) below the current key
((deleteRegValue)) - Deletes specified value under the current registry key.

== Filesystem Functions[[Anchor Filesystem-Functions]] ==
((getSpecialFolder)) - Finds the location of Windows-specific folders (eg current user's My Documents folder)
((findFirstFile)) - Searches a directory for a file or subdirectory with a specific name
((findNextFile)) - Finds the next file in a search started by findFirstFile
((findClose)) - Closes a file search handle opened by findFirstFile
((chdir)) - Changes the working folder
((getcwd)) - Returns the current working folder
((mkdir)) - Creates a new folder 
((rmdir)) - Deletes a folder

== Memory Functions ==
((allocHost)) - Allocates memory through the host application
((lockHost)) - Gets a pointer to a memory block allocated by the host application
((freeHost)) - Frees memory allocated by the host application

== System Functions[[Anchor System-Functions]] ==
((getDisplaySettings)) - Determines the bit depth, resolution and refresh rate of the screen
((getAsyncKeyState)) - Determines whether a key is up or down at the time the function is called
((getSysMem)) - Returns some values about the system memory.
((getWindowsVersion)) - Detects the currently running Windows version
((setTimerEvent)) - Activates or deactivates one of 10 available timers
((shellExec)) - Executes a Windows shell command
((sleep)) - Delays execution of the filter for a specific period of time

== Resource Functions ==
((copyResToArray)) - Copies a file resource to an array.
((getResAddress)) - Returns a pointer to the specified file resource.
((getResSize)) - Returns the size of the file resource.

== Locale Functions[[Anchor Locale-Functions]] ==
((getUserDefaultLCID)) - Returns the locale identifier for the user default locale
((getSystemDefaultLCID)) - Returns the locale identifier for the system locale
((getLocaleInfo)) - Retrieves information about a locale specified by identifier

== DLL Access Functions[[Anchor DLL-Access-Functions]] ==
((loadLib)) - Loads a DLL into memory
((getLibFn)) - Looks up a function in a loaded DLL
((callLib)) - Calls an '''int'''-valued CDECL or STDCALL function in a loaded DLL
((callLibFmc)) - Calls an '''int'''-valued CDECL function in a loaded DLL, passing a pointer to the FM context record
((fcallLib)) - Calls a '''double'''-valued CDECL or STDCALL function in a loaded DLL
((fcallLibFmc)) - Calls a '''double'''-valued CDECL function in a loaded DLL, passing a pointer to the FM context record
((freeLib)) - Releases a DLL from memory

== CPU Register Access Functions[[Anchor CPU-Register-Access-Functions]] ==
((getCpuReg)) - Gets contents of a cpu register
((finit)) - Uses the '''finit''' instruction to initialize the numeric processor
((fstsw)) - Uses the '''fstsw''' instruction to fetch the numeric processor status word
((fstcw)) - Uses the '''fstcw''' instruction to fetch the numeric processor control word
((fldcw)) - Uses the '''fldcw''' instruction to load a new value into the numeric processor control word

== Multithreading Functions[[Anchor Multithreading-Functions]] ==
((countProcessors)) - Returns the number of (virtual or physical) processors in your system.
((triggerThread)) - Creates a worker thread to execute the ((OnCtl)) handler.
((waitForThread)) - Waits for one (or all) worker threads to complete.
((isThreadActive)) - Tests whether a specific (or any) worker thread is still active.
((getThreadRetVal)) - Retrieves the exit code value of a completed worker thread.
((terminateThread)) - Terminates a specified (or all) worker thread(s).

== Critical Section Functions[[Anchor Critical-Section-Functions]] ==
((createCriticalSection)) - Allocates and initializes a Critical Section.
createCriticalSectionAndSpinCount - ''Not yet implemented''.
createCriticalSectionEx - ''Not yet implemented''.
setCriticalSectionSpinCount - ''Not yet implemented''.
((enterCriticalSection)) - Enters a Critical Section, first waiting until no other worker thread is inside.
((tryEnterCriticalSection)) - Enters a Critical Section immediately if available; returns ((false)) if the Critical Section is currently occupied by another worker thread.
((leaveCriticalSection)) - Leaves a Critical Section, permitting another waiting worker thread to enter it.
((deleteCriticalSection)) - Deletes a Critical Section and all its resources when no longer needed.

== See Also ==
((Command Reference)), ((Dialog Functions)), ((Image Functions)), ((C Runtime Functions))

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